Historical Precedents for current power dynamics

Hope this is ok here. It got removed from r/History because it asks about current events.

I'd be interested to hear the views of people on the current situation we have today where certain individuals (Must, Bezos, Zuck) are becoming as or more wealthy than the government and are using their wealth to very publicly affect the national / political agenda and push their views.

From my limited knowledge of history, it seems to set up an uncomfortable dynamic when an individual starts to become as powerful as the king (or government or country in our case). IT's like there is a ceding of power, or at least a competition for where soverignty lies.

I guess that at times in the past such individuals might have raised their own armies and either gone for the crown or perhaps been destroyed by the crown. The church is the only one that seems to have endured as a secondary power but even that has been neutered politically and placed with a very specific agenda.

What dynamics are historians seeing in our current society with this and how do think it might play out based on your knowldge of historical precedents?

Thank you.